How to Properly Use This Technology

Before you can use this application you must have a GreenSeeker handheld unit and a computer or smartphone.
Some Clemson University county extension offices have a handheld GreenSeeker unit available for use. Contact your local extension office for details. If you would like to purchase your own GreenSeeker unit please press the button below.
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Information That Is Needed

The "Get Started" page will take you to the application. This requires some basic crop information such as planting date, field NDVI, nitrogen rich strip NDVI and historical yields. Be sure to select crop and for cotton either irrigated or dryland before starting.

Nitrogen Rich Strip

The nitrogen rich strip is essential to making this tool work. To establish a nitrogen rich strip, you will need to apply 150lbs of nitrogen to the cotton and around 250lbs to corn at plant. Keep in mind this is just a strip as wide as your planters  and about 50ft long will be sufficient, not the whole field!

When To Collect Data For The Application

You should collect this data when you are ready to side-dress. Approximate time for cotton is pin head square and stages V6 to V10 for corn.

How To Collect Data

You will need to use the handheld GreenSeeker and collect the average NDVI for the nitrogen rich strip and the field. Collect NDVI from the field in a way that would be a representative average of the whole field this number will be used as your "field NDVI". Then collect NDVI from the nitrogen rich strip obtaining an average, this will be used as your "nitrogen rich strip NDVI". When collecting NDVI data with a GreenSeeker remember to hold it at least 36" above the crop canopy. Input the planting date and historical yield from that field into the appropriate boxes. 

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